D Programming – Arrays

One of the concepts I love is arrays. I really like putting values inside one container. Feels like cheating and magic at the same time. It can store values and even variables, it can also be one-dimensional or multi-dimensional, and it just solves many problems.

Below is the code for declaring and accessing arrays:

import std.stdio;

int main(){
	int numbers[4] = [5,1,3,10];
	int sum = 0;
	
	for(int i = 0; i<numbers.length; i++){
		sum+= numbers[i];
	}
	
	writeln("The sum is ", sum);
	
	return 0;
}

Here is the output:

 

d-arrays

 

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Thank you very much.

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D – Programming (Strings)

In programming, Strings are group of characters and they are not those strands of fiber that we tie knots or tie somebody’s neck. I often introduce students to this concept by making them count the letters of their name and resite them in reverse. Quite really fun at times. 🙂

Below is a code that shows string initialization and concatenation:

import std.stdio;

int main(){
	string fname = "Mark";
	string lname = "Hay";
	
	writeln("Hello ", fname, " ", lname);
	
	return 0;
}

Here is the output:

d-strings

 

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Thank you very much.

D Programming – While Loop

Hello there, below is a program that show a basic while loop. It is very much like the syntax of C++ and Java. It is really good to remember the parts of a loop like the starting value, end statement and the operation of increment or decrement. Enjoy! 🙂

import std.stdio;

int main(){
	int i = 0;
	
	while(i<11){
		writeln(i);
		i++;
	}
	
	return 0;
}

Here is the output:

d-while

 

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Thank you very much.

D Programming – Loops(For Loop)

Most of the time, students get confused of the usage of looping. I always say, “Imagine a block of code that prints 10 consecutive numbers. One way of doing it is by printing them one-by-one. That would be easy if printing 10 numbers is the case but if your program needs to print 1000 numbers then that would be a very long program just for printing. The answer to that problem is looping. If you use a loop, you just define a starting point, a condition of where you are going to stop, and the process if it is increasing or decreasing. A block of 1000 codes would just take three to four lines of codes.”

 

In this program we are going to use a loop called a for loop. I used a variable x to hold the value that will be printed then I declared the starting value and ending value which are inside the range.

Below is my program.

import std.stdio;

int main(){
	
	for(int i = 0; i<11; i++){
		writeln(i);
	}
	
	return 0;
}

 

Here is my output:

d-for

 

Thank you for reading this short post. 🙂

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D Programming – Arithmetic Operations Basics

One of the most used syntax in a language are the arithmetic operations. Operations like addition, subtraction, multiplication, division, and modulus are the basics. Below is a program I created that shows the basic syntax. I first declared two variables named x and y.  Then I performed the arithmetic operations using each variables in the following lines.

The code is below:

import std.stdio;

int main(){
	int x = 5, y = 2;
	writeln("x = ", x, " and y = ", y);
	writeln("x + y = ", x + y);
	writeln("x - y = ", x - y);
	writeln("x * y = ", x * y);
	writeln("x / y = ", x / y);
	writeln("x % y = ", x % y);
	
	return 0;
}

 

Run the Program.

The output should be same as below:

 

D-arith

 

Thank you for reading this short post.

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D Programming – If Statement

Most of the time, every programmer has the need to compare on or two values of variables in your program. Same as most of the programming languages, Python also has its syntax for the If Statement. In this article, I created a program that uses an if statement after the variables x, and y are declared. I assigned values 10 and 5 to variables x and y respectively.

The program is below:

import std.stdio;

int main(){
	int x = 10, y = 5;
	
	if(x > y){
		write("x is greater than y");
	}
	return 0;
}

Your output should be the same as here:
x is greater than y

Thank you for reading this post.

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D Programming – Variables

Hi there, I recently enjoyed learning some programming languages which are new to me. I came across with the D Programming Language. I have already put up an article on the codes on the basic console output in D located here: https://arjunaraneta.wordpress.com/2014/09/27/d-basic-output/

You can think of variables as an address in your memory that contains data that you’ll need and use. The syntax for using variables in python in very straightforward.

Here is a basic example of declaring a variable named x with a value of 10. After declaring and assigning a value, the program will output the value of x.

import std.stdio;

int main(){
int x = 10;
writeln("x = ", x);

  return 0;
}

The output should be:

x = 10

On the next example below, I declared two variables named x and y. I assigned a value for each of the variables. After assigning the values, I created another variable named z assigned the sum of x and y. The program will output the result after the addition.

import std.stdio;

int main(){
	int x = 10, y = 5;
	writeln("x + y = ", x + y);
	
	return 0;
}

The output should be:

x + y = 10

Thank you for your time 🙂
Please leave a comment below.
Be free to ask me questions.